First, the chemical composition of 20Cr precision seamless steel pipe
The chemical composition of 20Cr precision seamless steel pipe is as follows:
Carbon: 0.18~0.24%
Silicon: 0.17~0.37%
Manganese: 0.50~0.80%
Chromium: 0.70~1.00%
Phosphorus and sulfur: both ≤0.03% (some standards are ≤0.035%)
Other elements such as nickel, copper, molybdenum, etc. allow low residual content, specifically: Ni≤0.30%, Cu≤0.30%, Mo≤0.15%.
Second, the performance characteristics of 20Cr precision seamless steel pipe
1. Mechanical properties of 20Cr precision seamless steel pipe
- Strength and toughness: It has medium strength (tensile strength ≥835MPa, yield strength ≥540MPa) and good toughness, suitable for manufacturing mechanical parts with high toughness requirements;
- Hardenability: The surface hardness can reach 58~62HRC after carburizing and quenching, and the core hardness is 35~40HRC;
- Corrosion resistance: The addition of chromium gives it better corrosion resistance.
2. Processing characteristics of 20Cr precision seamless steel pipe
Excellent cold processing performance, and high-precision dimensions can be achieved through the cold rolling process (inner and outer diameter tolerances can be controlled within ±0.03mm);
Good welding performance, suitable for manufacturing complex structural parts.
20Cr precision seamless steel pipe application performance
Applicable to the manufacture of parts in the fields of automobiles, motorcycles, ships, etc., such as transmission shafts, gears, etc., which can significantly improve the service life of parts;
In oil drill pipes, scaffolding, and other scenes, its plasticity and toughness can meet the working conditions of light load and high requirements
Post time: May-23-2025